Stropping-machine.



G. BROWNING.

STROPPING MACHINE.

APPLICATION FILED JULY 30, 1909.

2 SHEETSSHEET I.

" Patented June 8, 1915.

G. BROWNING.

STROPPI NG MACHINE. APPLICATION FILED 1ULY30, 1909.

Patented June 8, 1915.

2 SHEETS-SHEET 2 strain eras rrnnr amen.

GEORGE BROWNING-p01? CHICAGO, ILLINOIS, AS SIGNOB '10 PERFECTIGN RAZORSTRQP COMPANY, OF CHICAGO, ILLINOIS, A, CORPORATION OF ILLENOIS.

S'IBOPPING-MACHINE.

intents.

Specification of Letters Patent.

Patented June 8, 191 .5.

Application filed uly 30, 1909. Serial No. 510,4;68.

To all whom it may concern Be it known that l, GEORGE BROWNING, asubject of the King of England, residing at Chicago, in the county of(look and State of Illinois, have invented certain new and usefulvImprovements vin Stropping-Machines, of which the following is adescription.

My invention relates to devices for stroppin or sharpening a razor orother cutting bla e, and for this purpose is provided with improvedstropping elements and with means or holding the blade to be sharpenedin the mostadvantageous position for the convenient and accurateapplication of the sharpening mechanism.

The object of my invention is to provide a simple, convenient andefiective device oftbe kind described, and to this end consists in thenovel construction, arrangement and combination of parts herein shownand described and more particularly pointed out in the claims.

In the accompanying drawings wherein like or similar referencecharacters indicate like or corresponding parts: Figure l, is a sideelevation of my device. Fig. 2, is an end elevation of the same. Fig. 3,is an elevation of my device showing the end oppositethat shown inFig.2. Fig. 4:, is a section taken substantially on line l4 of Fig. 1.Fig. '5, is a section of the blade holder of my device takensubstantially on line 5-5 of Fig.4. Fig. 6, is an enlarged sectionaldetail, showing the base holder and coiiperating parts. Fig. 7, is aperspective detail of the blade holder. Fig. 8, is a perspective detailof a distance piece for adjusting the position of a blade: in the bladeholder. Fig. 9, is a fragmentary view showing a portion of a bladeholder with the distance piece shown in Fig. 8 in operative relationthereto.

In the preferred form shown in the draw ings a suitable frame isprovided consisting of a pair of substantially vertical end members land 2 rigidly connected near their lower and upper ends by thetransverse members 3 and 9 respectively. in the form shown each endmember is provided at its lower end with one or more parts 4 bent inwardto a position substantially parallel to the member 3 and adapted toserve as feet or bearings for the frame. If desired a pad 5 of rubber orother suitable material may be provided, extending through a suitableopening in each part a or otherwise conventhe form shown, each member isprovided iently secured in Position to serve as a cushion to preventslipping or marring the surface upon which my device is resting. A pairof substantially parallel rollers or members 6 and 7 are rotatablymounted in suitable bearings upon the end members 1 and 2 each providedwith a gear 8 rigidly secured thereto and arranged to cooperate torotatively connect the members so that a rotation of one will produce acorresponding rotation of the other. The stropping or sharpening ele-,ments may be of any desired construction, and mounted upon or secured tothe members 6 and 7 in any desired manner. In

with a pair of suitably formed plates 10-10 slightly spaced from eachother and-arranged to extend longitudinally thereof. The central portionof each plate is formed to clamp upon the member with a part 11projecting radially at each side, adapted to engage a suitable stroppingor sharpening element between them. As shown a plurality of screws orbolts 12 are provided in the extended portions of the plates 10 adaptedto draw I the plates together to clamp the stropp'ing elements inposition upon the member.

The stropping orsharpening elements each preferably consists. of asubstantially flat sheet or plate 14: of soft rubber or other suitableresilient'material rigidly clamped in a radial position between theextended portions 11 of the plates 10 with its periphery or outer edgeprojecting beyond the plates. A suitable covering er leather or otherstropping material 15 is arranged to inclose the outer'edge of the sheet14 and extends into the space between the sheet 14% and ate 10 to securethe same in position. 95

In he preferred construction the plates 10 are so formed that thestropping elements are arranged spirally upon the members and extendlongitudinally thereof substantially the entire length of the members.100

that a blade 18 extending into the space be- 105 tween the members willhave its opposite sides engaged alternately. In the preferredconstruction shown, the stropping elements extend slightly fartherradially from the axis of the member at one end than at. its 110opposite end, so that the pressure against the side of the bladeincreases slightly from one end of the cutting edgeto the other and byoperating upon a larger portion of the Any suitable means may beprovided for rotating the members 6 and 7. In the form shown one end ofthe member 6 projects slightly beyond the end member 2 and a pinion 19is mounted upon the projecting portion. A gear 20 is rotatably mountedupon members. The end of each arm is also prefa pin 13 or other suitablemeans upon the end meifiber arranged to mesh with the pinion 19. A crankor other convenient means 21 is provided u on the gear 20 for rotatingthe same so t at by turning the crank the member 6 will be rotatedpreferably at a speed considerably greater than the gear 20. j

. The blade 18- to be stropped or sharpened may be held in position tobe operated upon by the stropping elements in any desired manner. In theform shown a pair of arms 22 and 23 are provided upon the end members 1and 2 respectively each rigidly secured thereto in any suitable manner.The upper end of the arm 22 is provided with a central slot or recess24extending longitudinally of the arm of suitable Width to permit anyprojecting portion, as-for example, the handle or other part upon, orattached to, a

blade to extend to the space beyond the end erably provided with acentral depression 25 arranged to cooperate with a suitably formedtransverse plate26 having its end formed to engage the recesses 25 tosupport the plate inposition and permitfits lateral movement. Theextremities of the plate 26 are also preferably increased in widthslightly as at 27-27 to provide suitable shoulders to engage the sidesof the recesses 25 to prevent longitudinal movement of the member 26. Inthe preferred construction shown, aresilient clamp 28 is provided ofsuitable form to engage a blade intermediate its edges leavingsufficient space between the walls of fthe clamp and that portion of theblade extending into the clamp to permit a limited lateral movement ofthe edges of the blade so that while the blade is held firmly in theclamp, itscutting edge is free to move laterally to adjust itself to thestropping elements.

The clamp 28 may be adjustably secured to the plate 26 in any convenientmanner. In the form shown, the clamp 28 is rigidly secured to a backplate 29 extending longitudinally beyond the ends of the clamp. A pairof posts or pins 3030"are provided upon the upper or rear side of theback 29 adapted to fit in suitable sockets 31-31 upon the plate 26. Aset screw 32 or other convenient fasteniiig means is provided upon eachof the sockets 31 adapted to engage a pin 30 when positioned in thesockets to firmly hold the same in position. In'the form shown a part 33is provided upon the back 29 arranged to engage the extremity of a bladepositionedin the clamp 28 to indicate proper position in the holder, andto prevent its longitudinal movement during the stropping operation. a

In the preferred construction a pin or projection 34 is provided uponthe plate 26 adapted to coiiperate with a suitably formed slot 35 in thearm 23 to prevent rocking or tipping of the bar 26 when the device isginoperation.

In the form shown, a provided extending across the space between themembers I and 2 and having a part at each end adapted to closelyfitabove the extremities of the plate 26 to prevent its displacement fromthe recesses 25. A disk provided with a suitablyformed'notch ordepression 41 in its. periphery is rigidly secured to the member 6. Apart 39 is prolock or cover 37lisvided' upon one end of the lock. 37adapted I 'to engage the notch L1 to prevent rotation of the members 6and 7- while the lock 37 is I that after the blade holder is positionedin my device the lock 37 must be closed or moved into position toprevent displacement of the plate 26 before the stropping elements canbe operated.

1 In the preferred construction a spring actuated dog 43 is provided toengage the teeth of the gear 8 or other convenient part upon the membersso that the stropping elements cannot be rotated in a direction to outor injure the stropping surfaces nor a blade being sharpened byengagement of the stropping elements with the cutting edge of the blade.7

Where it is desired to strop a blade narrower than that for which theclamp28 is in tended or where it is desirable for any cause to have theedge to be stropped project farther from the clamp 28, the distancepiece 44 shown in Figs. 8 and 9 may be employed.

.In the preferred construction shown, the

distance piece 44 consists of a flat piece of metal of any desiredthickness and of suitable width to fit within the clam 28 at the It isbelieved that the operation of my do matters vice is clearly describedin the foregoing specification and nofurther description is necessary.

Having thus described my improvement it is obvious that variousimmaterial modifications may be made in my device without departing fromthe spirit of my invention hence I do not wish to be understood asLimiting myself to the exact form and construction shown.

What I claim as new and desire to secure by Letters Patent is:

1. in a device of the kind described, a frame, a rotary member mountedupon said frame, and a stopping element mounted upon said member, incombination with a blade holder provided with a part looselycoiiperating with said frame to rigidly maintain said blade holder inposition, and means upon said blade holder adapted to engage a bladeintermediate its back and edge and present the edge of said blade tosaid stropping element.

2. in a device of the kind described, a rotary member, and a stroppingelement mounted upon said member comprising resilient means extendinglongitudinally of, and rigidly attached to, said member, and

. stropping material inclosing the periphery of said resilient means, incombination with a blade holder, extending substantially parallel to theaxis of said member adapted to engage the blade to control its positionand permit lateral movement of the edge of said bladeto adjust the sameto said stropping element.

3. In a device of the kind described, a

rotary member, and a stropping element,

mounted upon said member with one end slightly farther from the axis ofsaid member radially than its opposite end, in combination with a bladeholder extending substantially parallel to the axis of said memberadapted to engage the bladeto control its position and permit lateralmovement of the edge of said blade, to adjust the same to said stroppingelement,

4. In a device of the kind described, a frame, a rotary member mountedupon said frame and a stropping element mounted upon said member, incombination with a bar having a part near each end loosely cooperatingwith said frame to rigidly maintain said bar in position and a bladeholder adjustably mounted upon said bar adapted to engage a blade tocontrol its position and present the same to said stroppingelement.

5. In .a'device of the kind described, a frame, a rotary member mountedupon said frame and a stropping element mounted upon said member,.incombination with a bar having a part near each end loosely c0- operatingwith said frame to rigidly maintain said bar in position and a bladeholder adjustably mounted upon said bar adapted to engage a bladeintermediate its back and edge and control its position and permitlateral movement of the edge of said blade to adjust the same to saidstropping element.

6. In a device of the kind described, a frame, a rotary member mountedupon said frame and a stropping element mounted upon said member, incombination with a blade holder provided'with a part loosely cooperatingwith said frame to rigidly maintain said blade holder in position, and amovable, part upon said frame adapted to prevent the disengagement ofsaid blade holder.

' 7. In a device of the kind described, a

frame, a rotatable member mounted upon said frame and a stroppingelement mounted upon said member, in combination with a blade holderprovided with a part loosely cooperating with said frame to rigidlymaintain said blade holder in position and a movable part upon saidframe provided with means adapted to engage said member and prevent itsrotation, and with a part adapted to prevent the disengagement of saidblade holderfrom said frame, said movable part being so formed that saidrotatable member is only released when said blade holder is locked inposition.

8. In a device of the kind described, a

' frame, a rotary member mounted upon said 9. In a device of the kinddescribed, a 7 frame, a rotary member mountedupon said frame, and astropping element mounted upon said member, in combinatlon wlth a bladeholder providedwith a part loosely cotiperating with said'frame torigidly maintain I said bliide holder in position, and means upon saidblade holder adapted to engage a blade and present its edge to saidstropping element, and means for locking said rotatable member againstrotation in one direction.

10. In a device of the kind described, a'

frame, a rotatable member mounted upon said frame, a stropping elementmounted upon said member and a blade holder pro vided with a partloosely coiiperating with said frame to rigidly maintau said bladeholder in position, in, combination with a movable part provided withmeans normally 10 from-said frame, and means for locking said Irotatable member against rotation in one direction.

In testimony whereof, I have hereunto signed my-name in the presence oftwo subscribing witnesses.

' GEORGE BROWNING.

Witnesses:

BURTON U. HILLS, BLANCHE CHALMERS.

